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<a name="boost_typeindex.how_it_works"></a><a class="link" href="how_it_works.html" title="How it works">How it works</a>
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<p>
      <code class="computeroutput"><span class="identifier">type_index</span></code> is just a typedef
      for <code class="computeroutput"><a class="link" href="../boost/typeindex/stl_type_index.html" title="Class stl_type_index">boost::typeindex::stl_type_index</a></code>
      or <code class="computeroutput"><a class="link" href="../boost/typeindex/ctti_type_index.html" title="Class ctti_type_index">boost::typeindex::ctti_type_index</a></code>.
    </p>
<p>
      Depending on the <code class="computeroutput"><span class="keyword">typeid</span><span class="special">()</span></code>
      availability TypeIndex library will choose an optimal class for <code class="computeroutput"><span class="identifier">type_index</span></code>. In cases when at least basic
      support for <code class="computeroutput"><span class="keyword">typeid</span><span class="special">()</span></code>
      is available <code class="computeroutput"><span class="identifier">stl_type_index</span></code>
      will be used.
    </p>
<p>
      <code class="computeroutput"><a class="link" href="../BOOST_TYPE_IN_1_3_43_8_2_4.html" title="Macro BOOST_TYPE_INDEX_REGISTER_CLASS">BOOST_TYPE_INDEX_REGISTER_CLASS</a></code>
      macro is a helper macro that places some virtual helper functions or expands
      to nothing.
    </p>
<p>
      <code class="computeroutput"><a class="link" href="../BOOST_TYPE_IN_1_3_43_8_8_3.html" title="Macro BOOST_TYPE_INDEX_REGISTER_RUNTIME_CLASS">BOOST_TYPE_INDEX_REGISTER_RUNTIME_CLASS</a></code>
      macro is a helper macro that places the same helpers as BOOST_TYPE_INDEX_REGISTER_CLASS
      plus some additional helpers for boost::typeindex::runtime_cast to function.
    </p>
<p>
      Issues with cross module type comparison on a bugged compilers are bypassed
      by directly comparing strings with type (latest versions of those compilers
      resolved that issue using exactly the same approach).
    </p>
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<td align="right"><div class="copyright-footer">Copyright © 2012-2021 Antony Polukhin<p>
        Distributed under the Boost Software License, Version 1.0. (See accompanying
        file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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